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Table 1 The sex ratio produced during introgression of the male-killing infection to the Hokkaido genetic background. 'All-female' classification represent cases where both replicates produced all female broods. Where males were produced within a female-biased sex ratio, data is given separately for each replicate of the isofemale line.

From: Host resistance does not explain variation in incidence of male-killing bacteria in Drosophila bifasciata

Generation Sex ratio No. of lines Line-replicate: male
n    progeny/total
F1 All female 24  
  Female biased 0  
F2 All female 21  
  Female biased 3 15-1: no males. 15-2: 2/74
    21-1: 1/32. 21-2: no males
    25-1 no males. 25-2: 1/10
F3 All female 19  
  Female biased 5 12-1 no males. 12-2: 1/18
    15-1: 2/27 15-2: 2/52
    17-1: 2/20 17-2: 1/46
    20-1: 1/10 20-2: no males
    25-1: 1/40 25-2: no males
F4 All female 24  
  Female biased 0